128346040

素因数分解:

$2^3\times 5^1\times {\mathrm{439}}^1\times {\mathrm{7309}}^1$

素因数の和:7759

約数の個数: 32

約数和(自身を含む): 289476000

約数和(自身を除く): 161129960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 439, 878, 1756, 2195, 3512, 4390, 7309, 8780, 14618, 17560, 29236, 36545, 58472, 73090, 146180, 292360, 3208651, 6417302, 12834604, 16043255, 25669208, 32086510, 64173020, 128346040]

約数ペア:

[(1, 128346040), (2, 64173020), (4, 32086510), (5, 25669208), (8, 16043255), (10, 12834604), (20, 6417302), (40, 3208651), (439, 292360), (878, 146180), (1756, 73090), (2195, 58472), (3512, 36545), (4390, 29236), (7309, 17560), (8780, 14618)]